plant competition. today we will… understand differences between intraspecific and interspecific...
TRANSCRIPT
![Page 1: Plant Competition. Today we will… Understand differences between intraspecific and interspecific competition Measure plant competition in Sanford Woodlot](https://reader035.vdocuments.site/reader035/viewer/2022070409/56649e905503460f94b949e4/html5/thumbnails/1.jpg)
Plant Competition
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Today we will…
• Understand differences between intraspecific and interspecific competition
• Measure plant competition in Sanford Woodlot
• Apply our knowledge of correlations to understanding competition dynamics
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Competition
Intraspecific (within species) Interspecific (between species)
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CompetitionIntraspecific (within species) Interspecific (between species)
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Competition
Direct Indirect• Effects of one species
impact another species indirectly
• Apparent Competition• Exploitative Competition
Animals: physical combatPlants: release of toxins
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Apparent Competition (Indirect)
Abundance of one species increases likelihood of consumption of other species
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Exploitative Competition (Indirect)
Individuals use same limiting resource (most common type of competition)
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Why is it important to understand competition dynamics and outcomes?
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What are the trade-offs between conducting
controlled, manipulative experiments and observational studies?
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Today’s Activity: Measuring Competition
• Read over page 65
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Today’s Activity: Measuring Competition
• We will measure:
– Intraspecific competition in beech trees
– Interspecific competition between beech trees and other trees (collectively)
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Today’s Activity: Measuring Competition
• Methods: What will you do?
–Along transect, find focal beech tree, measure DBH
– From that tree measure DBH of nearest beech and nearest “other” tree
–Continue at every 6 meters (6 focal trees total)
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Today’s Activity: Measuring Competition
• Each team needs
– One 30-meter tape
– Coursepack
– Writing utensils
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Data Analysis & Results
• Calculate mean, standard deviation, and correlation coefficient using Excel sheet (ANGEL)
• Graph results
• Answer questions on page 66
• Class discussion of results
• Quiz